Home / 20,159.36-27,824.32-11,209.92

Finding the Fourth Proportional to 20,159.36, 27,824.32 and 11,209.92

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Solution

The fourth proportional to 20,159.36, 27,824.32 and 11,209.92 is: 15,472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.36 : 27,824.32 = 11,209.92 : x
  2. Step 2: Convert to fraction form
    20,159.36/27,824.32 = 11,209.92/x
  3. Step 3: Cross multiply
    20,159.36x = 27,824.32 × 11,209.92
  4. Step 4: Simplify right side
    20,159.36x = 311,908,401.25
  5. Step 5: Solve for x
    x = 311,908,401.25/20,159.36
  6. Step 6: Final answer
    x = 15,472.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.